push, fold, or turn (the edges or ends of something, especially a garment or bedclothes) so as to hide or secure them

he tucked his shirt into his trousers

make a flattened, stitched fold in (a garment or material), typically so as to shorten or tighten it, or for decoration

the suit was pinned and tucked all over

a flattened, stitched fold in a garment or material, typically one of several parallel folds put in a garment for shortening, tightening, or decoration

a dress with tucks along the bodice

food eaten by children at school as a snack

our parents provided us with a bit of money to buy tuck with

they send me a tuck box every month

(in diving, gymnastics, downhill skiing, etc.) a position with the knees bent and held close to the chest, often with the hands clasped round the shins

Lenzi nailed a reverse 3–1/2 somersault tuck on his final dive